Adjustable support for drills or the like.



PATENTED} JUNE 16, 1903;

G.G.GAUGHER. ADJUSTABLB'SUPPORT FOR DRILLS OR THE LIKE.

APPLICATION FILED AUG. 29, 1902.

1w MODEL.

INVENTOR WITNESSES:

ATTORNEYS.

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are. 731,173.

Patented June 16, 1903.

PATENT OFFICE.

GEORGE C. GAUCHER, OF NEW YORK, N. Y.

ADJUSTABLE SUPPORT FOR DRILLS OR THE LIKE.

SPECIFICATION forming part of Letters Patent N 0. 731,173, dated June 16, 1903. Application filed August 29, 1902- Serial No. 121.413- (No model.)

To alt whom, it may concern:

Be it known that I, GEORGE O. GAUCHER,

My invention relates to improvements inadjustable supports for drills and the like, such as are used for supporting hand-drills while drilling or reaming holes in structuraliron work, such as the beams, columns, and pillars of buildings, elevator-columns, and the like; and it consistsin a novel extensible support whereby the use of clamps and the like is avoided.

The objects of my invention are to facilitate the securing of drills during the boring, drilling, or reaming of holes in structuraL iron work and the like, to avoid the necessity of breaking through walls, floors, or ceilings to'obtain support for the drill, to increase the speed with which the drilling of holes in structural-iron work after the same has been erected may be done, and to make the support simple, compact, easily adjusted, and composed of few parts.

I will now proceed to describe the invention with reference to the accompanying drawings, in which one form of drill-support embodying my invention is illustrated, and will then point out the novel features in the claim.

In the said drawings, Figure 1 shows a longitudinal section of my improved drill-support, the same being shown as if in use. Fig. 2 shows a side view of the device. Fig. 3 shows a cross-section through the telescopic joint. Fig. 4. shows a cross-section through the socket which receives the end of the drillbrace.

According to present methods when a hole is to be drilled in a beam, girder, pillar, or column after the same is in place a clamp is secured to the beam or other object into which the hole is to be drilled, said clamp serving as a support for the drill-brace dur ing the drilling of the hole; but to attach the clamp it isfrequently necessary to break through a Wall, floor, or ceiling, and this frequently involves much time and labor. Moreover, the cost of repairing the holes thus made is considerable. Furthermore, the clamps used consist of a number of parts detachable from each other, and it often happens that some of these parts are lost. To properly adjust such clamps also takes considerable time.

According to my invention I provide a support for the drill-brace consisting of a portable bracing piece or strut, adjustable in length, preferably by means of a telescopic joint, having at oneend a socket adapted to receive the end of the drill-brace and adapted to be placed against any convenient object opposite the point where the hole is to be drilledsuch, for example, as an adjacent beam or column.

Referring now to the accompanying drawings, the drill-support there shown consists of two tubular members 1 and 2, the latter arranged to telescope within the former. These members may be formed of iron pipe of stand- Tube 2 is provided with a series of ard size. holes, through anyone of which a pin 3 may be thrust, and thereby the length of the support varied. The tube 1 is provided with screws at for centering and clamping tube 2. At its end the larger tube 1 is provided with a socket for receiving the end of the drillbrace. This socket is preferably formed by connecting a short tube 5 of suitable size to tube 1 by means of a coupling 6. A bottom piece 7 is held within the coupling, being clamped between the ends of tubes 1 and. 5, and this bottom piece preferably has a conical center hole to receive the end of the drillbrace. Tube 5 is provided with screws 8 to guide and center the drill-brace. The end of tube 2 is provided with a threaded cap 9,

carrying a center point 10.

Fig. lshows how the drill-support is used. The end of the drill-brace having been placed within the socket 5, the support is placed against any convenient object opposite the point at which the hole is to be drilled, and as soon as the drill is well started in the hole the whole'device is self-supporting. When the hole is finished and the drill withdrawn therefrom, the whole device may be removed to a new location without the loosening of nuts or clamps and without taking the device apart.

Since by the use of this device the'pressure required for feeding the drill is applied directly in the axial line thereof, once the drill is started it will continue to bore ina straight line. This is not the case with drill-supports consisting of angle-pieces clamped to the beam to be drilled and which must necessarily be clamped at a point above or to one side of the hole to be drilled. The pressure required for feeding tends to press such angle-pieces out of position, thus tending .to prevent the drill from feeding straight. The side pressure also frequently causes the drill to break.

It is obvious that the improved drill-support herein described is susceptible of variations and modifications in construction, and therefore I do not limit myself to the particular details of construction herein shown and described.

Having thus completely described my invention, what I claim, and desire to secure by Letters Patent, is- V In a support or bracing-strut for drills and the like, the combination with two members telescopically connected, one of said members being tubular and adapted to receive within it the other member, of a tubular socket-piece for receiving a drill-brace or similar device, a coupling connecting said socket-piece to one of said telescopic members, and a bottom piece for said socket, clamped within the coupling between the ends of said socketpiece and the adjacent telescopic member and having in it a centering-recess.

In testimony whereof I affix my signature in the presence of two witnesses.

GEORGE O. GAUOHER.

Witnesses:

HARRY M. MARBLE, O. F. CARRINGTON. 

